target: create/use register_cache_invalidate()

Create a generic register_cache_invalidate(), and use it to
replace three all-but-identical core-specific routines:

 - armv4_5_invalidate_core_regs()
 - armv7m_invalidate_core_regs
 - mips32_invalidate_core_regs() too.

Make cache->num_regs be unsigned, avoiding various errors.

Net code shrink and simplification.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/target/register.h b/src/target/register.h
index c14dfd43..0f8f2f4e 100644
--- a/src/target/register.h
+++ b/src/target/register.h
@@ -41,7 +41,7 @@ struct reg_cache
 	char *name;
 	struct reg_cache *next;
 	struct reg *reg_list;
-	int num_regs;
+	unsigned num_regs;
 };
 
 struct reg_arch_type
@@ -53,6 +53,7 @@ struct reg_arch_type
 struct reg* register_get_by_name(struct reg_cache *first,
 		const char *name, bool search_all);
 struct reg_cache** register_get_last_cache_p(struct reg_cache **first);
+void register_cache_invalidate(struct reg_cache *cache);
 
 void register_init_dummy(struct reg *reg);